Boundary layer
[计] 边界层\\n[化] 边界层
🧩 词语组成解析
layer
['leiə]
n. 层，层次;膜;[植]压条;放置者，计划者;
vt. 把…分层堆放;借助压条法;生根繁殖;将（头发）剪成不同层次;
vi. 形成或分成层次;[植]通过压条法而生根;
🗣️ 情景例句
You're welcome. Good-bye.
不用谢。再见。
To push him down
把他推倒
Many people believe that overweight results from overeating and stress.
很多人认为肥胖超重是因为吃得过多和压力造成的。